you guys running 4300 spec, is the car wild in the beginning of the race? are you lifting a lot at the beginning and holding it wide open toward the end? have you ran them on any tracks smaller than you posted above? just curious, i'd hate to see the wrong motor be chosen.
petro, whatta ya say we throw a 4200 pack in your truck with a spec motor this weekend so we can compare it to 4200 13.5 brushless??? i'd do it but i'm not bringing mine this week.